CN102858617B - Rack-and-pinion steering gear unit - Google Patents
Rack-and-pinion steering gear unit Download PDFInfo
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- CN102858617B CN102858617B CN201280000380.8A CN201280000380A CN102858617B CN 102858617 B CN102858617 B CN 102858617B CN 201280000380 A CN201280000380 A CN 201280000380A CN 102858617 B CN102858617 B CN 102858617B
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- Prior art keywords
- miniature gears
- rack
- rack shaft
- shaft
- pinion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D3/00—Steering gears
- B62D3/02—Steering gears mechanical
- B62D3/12—Steering gears mechanical of rack-and-pinion type
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/18—Mechanical movements
- Y10T74/18056—Rotary to or from reciprocating or oscillating
- Y10T74/18088—Rack and pinion type
- Y10T74/18096—Shifting rack
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Power Steering Mechanism (AREA)
- Transmission Devices (AREA)
- Gears, Cams (AREA)
- Gear Transmission (AREA)
Abstract
The invention aims to reduce the weight and the cost of a gear housing for a steering gear unit. An outward-flange-shaped engaging projection (43) is formed in an intermediate section in the axial direction of a rack shaft (40), and a gear housing is configured from a pinion-side housing (10), a pinion-opposing-side housing (20), and an intermediate tube (30). As a result, movement of the rack shaft (40) toward the pinion side and toward the pinion-opposing side is restricted by using both ends of the pinion-side housing (10). Hence, it is possible to make a member lighter by reducing the thickness of the intermediate tube (30), and configuring the intermediate tube (30) from a flexible material, because it is possible to limit the section requiring significant strength to the pinion-side housing (10), which is short in length in the vehicle-width direction. Furthermore, it is possible to reduce the cost of production, because manufacturing is simple.
Description
Technical field
The present invention relates to the rack and pinion steering gear unit forming and the steering hardware of deflection angle is provided to the wheel flutter of automobile.
Background technology
Rack and pinion steering gear unit is used as the mechanism rotary motion inputted from bearing circle being transformed into the straight-line motion for providing deflection angle.The steering hardware with rack and pinion steering gear unit is described in Japanese Unexamined Patent Publication 61-129670 publication, Japanese Unexamined Patent Publication 2005-96591 publication, Japanese Unexamined Patent Publication 2009-56827 publication etc., and, be in the past well-known.Figure 14 shows the structure of 1 example of the steering hardware enclosing rack and pinion steering gear unit.In this steering hardware, for alleviating the operating effort of bearing circle 101, the auxiliary force that turns to of the motor 102 being arranged on the pars intermedia of Steering gear 105 is supplied to steering shaft.And the action of the steering shaft operation along with bearing circle 101 rotated is transmitted to tween drive shaft 106, and makes the rack shaft of rack and pinion steering gear unit 103 move back and forth via pinion shaft 107, then turns to via pull bar 104 pairs of wheel flutters.
Diverter unit 103 has rack shaft 109 as illustrated in fig. 15 like that and receives the gear housing 110 of this rack shaft in inner side in the mode that can be shifted vertically.Gear housing 110 is integrally formed by the metal of casting forming aluminum alloy etc.By in this wise gear housing 110 being made metal, can bear when turning to be passed from wheel turn to counter-force.Gear housing 110 has: the main resettlement section 111 of the cylindrical shape of length direction both ends open; Secondary resettlement section 112, is arranged on the outer peripheral face by length direction one end portion of main resettlement section 111, and has the center shaft being in the position relationship mutually reversed with the center shaft of main resettlement section 111.The inner space of main resettlement section 111 and secondary resettlement section 112 is interconnected.Gear housing 110 by bolt or thru-bolt by supporting and fixing in vehicle body (vehicle frame), this bolt or thru-bolt are interspersed in a pair mounting flange 113 on be separated vertically two positions in the outer peripheral face being fixedly installed on main resettlement section 111.
Rack shaft 109 has the rack tooth be formed on axial a part of side.Rack shaft except the part being formed with this rack tooth, the pole shape of barrel surface that to be outer peripheral face be.Pinion shaft 107, under the state of the rack tooth engagement of the pinion gear teeth making to be arranged in top ends and rack shaft 109, can be supported in secondary resettlement section 112 rotatably.About the diametric(al) of main storage receiving part 111, divide in the opposite side of pair storage receiving part 112 the cylinder portion 108 being provided with setting-in briquetting.
In such rack and pinion steering gear unit, by the operation of the bearing circle 101 of chaufeur, rack shaft 109 moves vertically, when arriving stroke end, the sphero-joint socket 114 be fixed on the two ends in the overall width direction of rack shaft 109 abuts with the two ends in the overall width direction of the main resettlement section 111 of gear housing 110 respectively, thus, the mobile of rack shaft 109 is stopped, and limits the miles of relative movement of rack shaft 109.
When such structure, because the interval in the overall width direction being fixed on the sphero-joint socket 114 on the two ends of rack shaft 109 is wide, the length in the overall width direction of gear housing 110 is also elongated.Thus, the thrust loading of two supports when sphero-joint socket 114 abuts of the gear housing 110 grown by overall width direction, thus gear housing 110 needs large intensity.Thus, gear housing 110 needs the metallic material by rigidity is large to be formed, and, need the wall thickness thickening gear housing 110.Its result, produces the problem that weight increases, manufacturing cost also increases of gear housing 110.
And, because gear housing 110 is along the long shape of the axis of rack shaft 109, so when by casting integrated formation, also there is fee of material, problem that treating cost is high.
The structure being divided into plural parts to form the housing of deflector is disclosed in Japanese Unexamined Patent Publication 61-129670 publication, Japanese Unexamined Patent Publication 2009-56827 publication and Japanese Unexamined Patent Publication 2005-96591 publication.In addition, following structure is disclosed in Japanese Unexamined Patent Publication 2005-96591 publication wherein, gear housing is divided into installation portion and pars intermedia three part of the left and right be arranged on vehicle body, the installation portion of left and right is wherein formed by aluminium class material, and pars intermedia is formed by iron type materials.According to such structure, the axial length of the installation portion of left and right is shorter than the axial length of the gear housing of one, thus casting manipulations becomes easy, and other processing also becomes easy.But when point ceding territory to form gear housing, be the thrust loading of two supports when sphero-joint socket abuts in the overall width direction by gear housing, gear housing needs sizable intensity.Thus, need the wall thickness thickening gear housing, or manufacture gear housing by the metallic material that intensity is large.Like this, the weight in fact not solving gear housing increases, manufacturing cost increases such problem.
Prior art document
Patent documentation 1; Japanese Unexamined Patent Publication 61-129670 publication
Patent documentation 2: Japanese Unexamined Patent Publication 2009-56827 publication
Patent documentation 3: Japanese Unexamined Patent Publication 2005-96591 publication
Summary of the invention
The problem that invention will solve
The object of the invention is in view of the foregoing, realize the lightweight of the gear housing of rack and pinion steering gear unit and cheapization of manufacturing cost thereof.
For solving the means of problem
Rack and pinion steering gear unit of the present invention has: based on the rotation of pinion shaft and the rack shaft moved back and forth; Sphero-joint socket, diameter is formed in the two ends of this rack shaft than this rack shaft the earth; Metal miniature gears side body, can support the miniature gears side end being configured with described pinion shaft in described rack shaft slidably, and, can be fixed on vehicle frame; Engaging protuberance, diameter is formed in the axial pars intermedia be between described miniature gears side end and end, miniature gears opposition side of described rack shaft than this rack shaft the earth, and end, described miniature gears opposition side is in the opposition side of this miniature gears side end.
In rack and pinion steering gear unit of the present invention, during described rack shaft displacement, the sphero-joint socket be installed on described miniature gears side end in described sphero-joint socket abuts with one end of described miniature gears side body, limit the movement of this rack shaft to miniature gears opposition side thus, described engaging protuberance abuts with the other end of described miniature gears side body, limits the movement of this rack shaft to miniature gears side thus.
Preferably, also have: metal miniature gears opposition side housing, it can support the end, described miniature gears opposition side in described rack shaft slidably, and, can be fixed on vehicle frame; The intermediate cylinder portion of hollow cylindrical, one end is connected with described miniature gears side body, and the other end is connected with described miniature gears opposition side housing, and covers the pars intermedia of described rack shaft.
In this situation, more preferably, described miniature gears opposition side housing can support the end, miniature gears opposition side of described rack shaft slidably via elastomeric elements such as rubber.
More preferably, described rack shaft engages the solid axle being formed with tooth bar and the quill shaft not forming tooth bar is formed, around the junction surface of this solid axle and this quill shaft, be formed with described engaging protuberance.
More preferably, the damper element of the elastomeric element such as rubber is installed on the bearing surface abutted with the other end of described miniature gears side body in described engaging protuberance.
More preferably, described intermediate cylinder portion can along the axial stretching of described rack shaft.Specifically, this intermediate cylinder portion is formed by having flexible material, and total length or the part in this intermediate cylinder portion are made bellows-shaped.In addition, synthetic resin or rubber can be enumerated as having flexible material.
Invention effect
According to the steering hardware of the present invention formed as described above, abutted with the sphero-joint socket on the miniature gears side end being formed in rack shaft by one end of miniature gears side body, the movement of rack shaft to miniature gears opposition side can be limited, and by the other end of miniature gears side body be formed in be in rack shaft the axial pars intermedia between miniature gears side end and end, miniature gears opposition side on engaging protuberance abut, the movement of rack shaft to miniature gears side can be limited.Thus, in situation of the present invention, due to the two ends of the miniature gears side body that the length in overall width direction can be utilized short, during left and right directions mobile to restriction rack shaft, the thrust loading of effect supports, so the miniature gears side body that the length that the part of intensity large for needs can be defined in overall width direction is short.Therefore, it is possible to realize lightweight as the housing entirety of deflector, and can realize by cheapization of manufacturing cost of casting or other processing become easy and bring.
Accompanying drawing explanation
Fig. 1 is the front view of the biopsy cavity marker devices of the key position of the deflector of the diverter unit of the first case representing embodiments of the present invention.
Fig. 2 is the front view of the biopsy cavity marker devices of the key position of the deflector of the diverter unit of the second case representing embodiments of the present invention.
Fig. 3 is the front view of the biopsy cavity marker devices of the variation representing the engaging protuberance be formed on rack shaft.
Fig. 4 is the front view of the biopsy cavity marker devices of the variation representing the engaging protuberance be formed on rack shaft.
Fig. 5 is the front view of the biopsy cavity marker devices of the variation representing the engaging protuberance be formed on rack shaft.
Fig. 6 is the front view of the biopsy cavity marker devices of the variation representing the engaging protuberance be formed on rack shaft.
Fig. 7 is the front view of the biopsy cavity marker devices of the variation representing the engaging protuberance be formed on rack shaft.
Fig. 8 is the front view of the biopsy cavity marker devices of the variation representing the engaging protuberance be formed on rack shaft.
Fig. 9 is the birds-eye view of the key position of the deflector of the diverter unit of the 3rd example representing embodiments of the present invention.
Figure 10 is the birds-eye view of the key position of the deflector of the diverter unit of the 4th example representing embodiments of the present invention.
Figure 11 is the birds-eye view of the key position of the deflector of the diverter unit of the 5th example representing embodiments of the present invention.
Figure 12 is the front view of the biopsy cavity marker devices of the key position of the deflector of the diverter unit of the 6th example representing embodiments of the present invention.
Figure 13 is the longitudinal section representing the pinion shaft of Figure 12 and the engaging piece of tooth bar.
Figure 14 is the block diagram representing the steering hardware entirety being suitable for diverter unit of the present invention.
Figure 15 is the birds-eye view of the diverter unit represented in the past.
Detailed description of the invention
［ first case of embodiment ］
Fig. 1 is the front view of the biopsy cavity marker devices of the key position of the diverter unit 103a representing this example.The deflector 103a of this example is installed on the not shown vehicle frame of front side vehicle frame etc.The nearby side orthogonal with the paper of Fig. 1 is on the upside of vehicle body, and the inboard orthogonal with the paper of Fig. 1 is on the downside of vehicle body, and the left and right directions of Fig. 1 is equivalent to overall width direction, and the upper direction of Fig. 1 is equivalent to vehicle body back side, and the lower direction of Fig. 1 is equivalent to vehicle body front side.
The deflector 103a of this example has miniature gears opposition side housing 20 and the intermediate cylinder portion 30 being connected these miniature gears side bodies 10 and miniature gears opposition side housing 20 in the miniature gears side body 10 on the right side of Fig. 1, the left side of Fig. 1.
Miniature gears side body 10 in these parts and miniature gears opposition side housing 20 are formed by metals such as cast aluminium alloys.
On the other hand, the intermediate cylinder portion 30 of hollow cylindrical is formed by injection molded or blow molding synthetic resin.External screw thread 31 is formed at the outer peripheral face of the right-hand member in this intermediate cylinder portion 30.And, by this external screw thread 31 being screwed into the negative thread 11 on the inner peripheral surface of the left end being formed in miniature gears side body 10, the right-hand member in intermediate cylinder portion 30 is fixed on this miniature gears side body 10.In addition, between the inner peripheral surface of the left end of miniature gears side body 10 and the outer peripheral face of the right-hand member in intermediate cylinder portion 30, be folded with O shape ring 32, keep the air-tightness of the connecting portion in miniature gears side body 10 and intermediate cylinder portion 30.On the other hand, flange part 33 is formed with at the outer peripheral face of the left end in intermediate cylinder portion 30.And this flange part 33 is fixed on the inner peripheral surface of miniature gears opposition side housing 20 via the damper element 34 of elastomeric element.
In the inner side of the inner peripheral surface 35 in intermediate cylinder portion 30, the left and right directions along Fig. 1 can be configured with rack shaft 40 slidably.In addition, at the left end of the inner peripheral surface 35 in this intermediate cylinder portion 30, be embeddedly fixed with bearing lining 36, and the left end of rack shaft 40 can be supported slidably.
Sphero-joint socket 51,52 is formed respectively at the axial two ends of rack shaft 40.These sphero-joint sockets 51,52 are linked with pull bar 104 respectively, and these pull bars 104 are connected with wheel via not shown track arm.In addition, the diameter of sphero-joint socket 51,52 is formed larger than rack shaft 40.
Miniature gears side body 10 is integrally formed with the cylindrical protrusion 12 that miniature gears inserts.Be inserted into this cylindrical protrusion 12 pinion shaft 107 lower end outer peripheral face on, be formed with the not shown miniature gears engaged with rack shaft 40.On the other hand, the upper end of gear 107 is attached at the lower end of the tween drive shaft 106 linked with bearing circle 101 as illustrated in fig. 14.
During chaufeur rotation process bearing circle 101, rotated by described tween drive shaft 106 and universal-joint etc. transmission, the miniature gears of pinion shaft 107 is rotated.And, correspondingly make rack shaft 40 slide in left-right direction with the rotation of this miniature gears, change the deflection angle of wheel.
In addition, miniature gears side body 10 and miniature gears opposition side housing 20 are formed with a pair vehicle body installation jut 13,21 respectively.In these vehicle body installations with on jut 13,21, often locate a ground along vehicle body above-below direction and be formed with circular mounting hole 131,211 respectively.
Not shown bolt is inserted each mounting hole 131,211, and by this bolted on vehicle frame, thus, miniature gears side body 10 and miniature gears opposition side housing 20 are installed in vehicle frame with rigid construction.
The intermediate cylinder portion 30 forming the steering hardware of this example is formed by synthetic resin, thus supporting turns to the ability of counter-force little from wheel.Thus, when this example, by metal miniature gears side body 10 and miniature gears opposition side housing are installed on vehicle frame with rigid construction, thus, supported by these miniature gears side bodies 10 and miniature gears opposition side housing 20 and turn to counter-force from wheel.
In addition, because miniature gears opposition side housing 20 supports intermediate cylinder portion 30, so can alleviate the Radial load being applied to this intermediate cylinder portion 30 from bearing lining 36 via the damper element 34 of elastomeric element.
Rack shaft 40 is the quill shaft 42 not forming tooth bar shown in left side of the solid axle 41 being formed with tooth bar shown in right side and the Fig. 1 engaging Fig. 1 by friction welding and is formed.In addition, around the junction surface of these solid axles 41 and quill shaft 42, engaging protuberance 43 is formed with.This engaging protuberance 43 is formed in the axial pars intermedia between the miniature gears side end (right part of Fig. 1) of rack shaft 40 and end, miniature gears opposition side (left end of Fig. 1), is formed as discoid larger than the external diameter of solid axle 41 and quill shaft 42 of diameter.
Thus, made bearing circle 101 rotate to a direction by chaufeur, when rack shaft 40 is to the left side movement of Fig. 1, the left surface of the sphero-joint socket 51 on right side is connected to the bearing surface 14 of the right-hand member of miniature gears side body 10.Like this, the bearing surface 14 of miniature gears side body 10 forms the mobile terminal of rack shaft 40 to the movement of miniature gears opposition side, and restriction rack shaft 40 is to miniature gears opposition side (left side of Fig. 1) movement further.
On the other hand, made bearing circle 101 rotate to other direction by chaufeur, when rack shaft 40 is to the right side movement of Fig. 1, the right flank being arranged on the engaging protuberance 43 on rack shaft 40 is connected to the bearing surface 15 of the left end of miniature gears side body 10.Like this, the bearing surface 15 of miniature gears side body 10 forms the mobile terminal of rack shaft 40 to the movement of miniature gears side, and restriction rack shaft 40 is to miniature gears side (right side of Fig. 1) movement further.
As mentioned above, when this example, the two ends, overall width direction of miniature gears side body 10 are utilized to support the thrust loading acted on when limiting left and right directions mobile of rack shaft 40.Thereby, it is possible to the miniature gears side body 10 that the length part of intensity large for needs being limited to the overall width direction in the housing section of diverter unit 103 is short.Therefore, it is possible to realize lightweight as housing entirety, and also can realize by cast or other processing become easy and bring cheap for manufacturing cost.
In addition, for intermediate cylinder portion 30, the sphero-joint socket 51 on right side or engaging protuberance 43 not only can not be subject to thrust loading when abutting with the two ends, left and right of miniature gears side body 10, be also subject to hardly from wheel radial direction turn to counter-force.Thus, guarantee that the essentiality of intensity reduces, as long as guarantee the functions of waterproof and dustproof of rack shaft 40 higher.Therefore, it is possible to form intermediate cylinder portion 30 by the injection molded of synthetic resin etc., can thin-walled and light weight ground form.Thereby, it is possible to suppress low by fee of material, and do not need secondary processing, thus the attenuating of tooling cost can also be realized.
［ second case of embodiment ］
Fig. 2 is the front view of the biopsy cavity marker devices of the key position of the deflector of the steering hardware representing the second case forming embodiments of the present invention.The following description is described centered by the formations different from the first case of embodiment is divided, and omits or simplifies the explanation repeated.This example is the variation of the first case of embodiment, is to make the material in intermediate cylinder portion 30 be the example of more soft material.
In the diverter unit 103b of this example, the intermediate cylinder portion 30 as hollow cylindrical uses the structure formed by injection molded or blow molding rubber.The right-hand member in this intermediate cylinder portion 30 is fixed on miniature gears side body 10.Specifically, by the right-hand member of the inner peripheral surface 35 in this intermediate cylinder portion 30, be embedded in the periphery of the cylindrical portion 16 on the left end being arranged on miniature gears side body 10 outward, then by being with or restricting fastening around it, thus the right-hand member in intermediate cylinder portion 30 is fixed on miniature gears side body 10.Instead, the outer peripheral face coating of the cylindrical portion 16 on the left end being arranged on miniature gears side body 10 is also used as the lining cement of aquaseal, then, by the right-hand member in the inner peripheral surface 35 in outer intermediate cylinder portion 30, can be fixed on miniature gears side body 10 by the bonding right-hand member by this intermediate cylinder portion 30.
On the other hand, the left end in intermediate cylinder portion 30 is fixed on lining holding element 37.These its both ends of lining holding element 37 have flange part outwardly, and the damper element 34 via elasticity material is fixed on the inner peripheral surface of miniature gears opposition side housing 20.And, the periphery of the flange part of the right-hand member side of lining holding element 37 will be embedded in outside left end in the inner peripheral surface 35 in intermediate cylinder portion 30, fastening by band again, under the bubble-tight state of connecting portion keeping these intermediate cylinder portions 30 and lining holding element 37, the left end in this intermediate cylinder portion 30 is fixed on lining holding element 37.
In addition, in this example, the total length in intermediate cylinder portion 30 or a part can also be made to become the bellows-shaped that can stretch.If formation ripple, then stretched by corrugated portion and absorb the manufacturing errors of all parts, miniature gears side body 10 and miniature gears opposition side housing 20 operation be arranged on vehicle frame are become easy.In addition, because corrugated portion is stretched, so do not need mounting hole 131,211 to be made the axially long elongated hole at rack shaft 40, mounting hole 131,211 is simple circular holes.In addition, even if in the model that the length of rack shaft 40 is different, by making the total length in intermediate cylinder portion 30 flexibly stretch, also can universally use.
In the inner side of the inner peripheral surface 35 in described intermediate cylinder portion 30, rack shaft 40 can be configured with slidably along the left and right directions of Fig. 3.In addition, being fixed with the inner circumferential of lining holding element 37 of left end in intermediate cylinder portion 30, being embedded with bearing lining 36, the left end of rack shaft 40 can be supported slidably.
In this example, sphero-joint socket 51,52 is in order to waterproof with dust-proofly also to be covered by undulatory sphero-joint protective case 53,54.These sphero-joint protective cases 53,54 also can form with being formed as undulatory intermediate cylinder portion 30.
The intermediate cylinder portion 30 of this example is also formed by rubber, thus can not support and turn to counter-force from wheel.Thus, when this example, by metal miniature gears side body 10 and miniature gears opposition side housing 20 are installed on vehicle frame with rigid construction, are supported by these miniature gears side bodies 10 and miniature gears opposition side housing 20 thus and turn to counter-force from wheel.
In this example, form intermediate cylinder portion 30 by the injection molded with flexible rubber, with thin-walled and light weight formed.Thereby, it is possible to suppress fee of material lower, and do not need secondary processing, thus the attenuating for the treatment of cost can also be realized.In addition, in the present invention, what replace synthetic resin or rubber etc. has flexible material, makes this intermediate cylinder portion 30 with light metals such as aluminum alloys, but its wall thickness of reduction also can be adopted to make the structure of its thin-walled property.Other structures and the function of the second case of embodiment are identical with first case.
［ first case of embodiment and the variation of second case ］
The variation of the engaging protuberance that Fig. 3 ~ Fig. 8 shows the movement for limiting rack shaft and arranges.Fig. 3 is the example welding this solid axle on the quill shaft that diameter is larger than solid axle, fix the engaging protuberance of miscellaneous part.In more detail, the right-hand member of the inner peripheral surface 421 of the quill shaft 42 in large footpath, the left end of embedded solid axle 41, and be welded and fixed the right side 422 of quill shaft 42 and the periphery 411 of solid axle 41.Then, on the outer peripheral face 411 of solid axle 41, after the inner peripheral surface 431 of outer miscellaneous part and circular engaging protuberance 43, engaging protuberance 43 is fixed on the outer peripheral face 411 of solid axle 41 by riveted joint processing.In addition, in the recess 432 of the right side of engaging protuberance 43, the damper element 433 of elastomeric element is installed.
According to said structure, rack shaft 40 moves to the right, and engaging protuberance 43 is connected to the bearing surface 15 of the left end of the miniature gears side body 10 shown in Fig. 1 and Fig. 2 via the damper element 433 of elastomeric element, thus impact load when can relax abutting.Therefore, do not need the intensity of the parts improving rack shaft 40, pinion shaft 107 etc., these parts miniaturizations can be made.
Fig. 4 is the example being fixed the engaging protuberance of miscellaneous part on the quill shaft expanding to right-hand member side by welding solid axle.In more detail, using the left side of quill shaft 42 as path hollow bulb 423, only form large footpath hollow bulb 424 in right-hand member side.And embedded solid axle 41 in the inner peripheral surface 4241 of large footpath hollow bulb 424 wherein, by the periphery 411 of the right side 4242 and solid axle 41 that are welded and fixed large footpath hollow bulb 424.Then, on the periphery 411 of solid axle 41, after the inner peripheral surface 431 of outer miscellaneous part and circular engaging protuberance 43, engaging protuberance 43 is fixed on the periphery 411 of solid axle 41 by riveted joint processing.
According to said structure, the thrust loading that sphero-joint socket 51 or engaging protuberance 43 for the right side shown in quill shaft 42, Fig. 1 and Fig. 2 are not subject to when abutting with the two ends, left and right of miniature gears side body 10, only supports and turns to counter-force from wheel.Thereby, it is possible to use path and the hollow material of thin-walled light weight, fee of material can be suppressed lower, and can lightweight be realized.
Fig. 5 welds solid axle on quill shaft, makes the example that engaging protuberance and quill shaft are integrally formed.In more detail, the engaging protuberance 43 of outward flange shape is formed at the right-hand member of quill shaft 42.And, at the right-hand member of the inner peripheral surface 421 of this quill shaft 42, the path solid part 414 of embedded solid axle 41 left end, and by being welded and fixed the engaging right side 434 of protuberance 43 and the outer peripheral face 411 of solid axle 41.According to such structure, engage protuberance 43 owing to forming with quill shaft 42, so can parts count be cut down, reduce manufacturing cost.
Fig. 6 is the example of the circular engaging protuberance inserting fixing miscellaneous part in the endless groove of the outer peripheral face being formed at solid axle.In more detail, the outer peripheral face 411 of solid axle 41 is formed with the endless groove 412 to radially inner side depression, and outer with the engaging protuberance 43 of back-up ring shape formation in this endless groove 412, and engaging protuberance 43 is fixed on solid axle 41.
Fig. 7 is outer on quill shaft and welds solid axle and make the example that engaging protuberance and solid axle form.In more detail, form the engaging protuberance 43 of outward flange shape at the left end of solid axle 41, and form path hollow bulb 425 at the right-hand member of quill shaft 42.And, on the inner peripheral surface 413 of the left end of solid axle 41, the path hollow bulb 425 of embedded quill shaft 42.Then, by being welded and fixed the engaging left side 435 of protuberance 43 and the outer peripheral face 426 of quill shaft 42.
According to such structure, when the right side of rack shaft 40 to Fig. 7 is moved, when engaging protuberance 43 is connected on the bearing surface 15 of the left end of the miniature gears side body 10 shown in Fig. 1 and Fig. 2, weld part 44 supports engaging protuberance 43 from behind, prevents the inclination engaging protuberance 43.Therefore, it is possible to increase the rigidity of engaging protuberance 43.In addition, engage protuberance 43 owing to forming with solid axle 41, so can parts count be cut down, and reduce manufacturing cost.
The end face of quill shaft docks with the end face of solid axle and welds by Fig. 8, and makes the example that the end of engaging protuberance and solid axle forms.In more detail, the engaging protuberance 43 of outward flange shape is formed at the left end of solid axle 41.And, the right side 422 of quill shaft 42 is docked with the left side 435 engaging protuberance 43.Then, by being welded and fixed the engaging left side 435 of protuberance 43 and the outer peripheral face 426 of quill shaft 42.
According to said structure, when the right side of rack shaft 40 to Fig. 8 is moved, when engaging protuberance 43 is connected on the bearing surface 15 of the left end of the miniature gears side body 10 shown in Fig. 1 and Fig. 2, weld part 44 supports engaging protuberance 43 from behind, prevents the inclination engaging protuberance 43.Therefore, it is possible to increase the rigidity of engaging protuberance 43.In addition, engage protuberance 43 owing to forming with solid axle 41, so can parts count be cut down, and reduce manufacturing cost.
The first case of embodiment and second case are illustrated about the example of pinion type power steering hardware the present invention being applicable to Steering gear assistance type, but the present invention also goes for the pinion type power steering hardware of miniature gears assistance type, the pinion-and-rack steering device of type hand.
［ the 3rd example of embodiment ］
Fig. 9 is the birds-eye view of the key position of the deflector 103c of the steering hardware representing the 3rd example forming embodiments of the present invention.Below, omit or simplify and explanation that the situation of each example of embodiment repeats, identical parts mark identical Reference numeral and are described.The deflector 103c of this example is installed on the not shown vehicle frame of front side vehicle frame etc.The nearby side orthogonal with the paper of Fig. 9 is equivalent to vehicle body upper side, the inboard orthogonal with the paper of Fig. 9 is equivalent on the downside of vehicle body, the left and right directions of Fig. 9 is equivalent to vehicle body left and right directions, and the upper direction of Fig. 9 is equivalent to vehicle body front side, and the lower direction of Fig. 9 is equivalent to vehicle body back side.
Deflector 103c have the miniature gears side body 10 on the right side of Fig. 9, the left side of Fig. 9 miniature gears opposition side housing 20 and connect the intermediate cylinder portion 30 of these miniature gears side bodies 10 and miniature gears opposition side housing 20.
Miniature gears side body 10 wherein and miniature gears opposition side housing 20 are shaped by metals such as cast aluminium alloys.On the other hand, the intermediate cylinder portion 30 of hollow cylindrical uses the material with flexible non-metal of synthetic resin, rubber etc. to be formed by injection molded or blow molding.Synthetic resin or rubber quality lighter than metallic material, and there is large elasticity, and there is flexibility, can stretch.
The right-hand member in such intermediate cylinder portion 30 is fixed on the left end of miniature gears side body 10.Specifically, the right-hand member in the inner peripheral surface 35 in this intermediate cylinder portion 30, inserts the not shown cylindrical portion be formed on the left end of miniature gears side body 10, and fixes the right-hand member in these intermediate cylinder portions 30 and the left end of gear miniature gears side body 10 by band 55.
On the other hand, the left end in intermediate cylinder portion 30 is fixed on the right-hand member of miniature gears opposition side housing 20.Specifically, the left end in the inner peripheral surface 35 in this intermediate cylinder portion 30, inserts the not shown cylindrical portion be formed on the right-hand member of miniature gears opposition side housing 20, and fixes the left end in these intermediate cylinder portions 30 and the right-hand member of miniature gears opposition side housing 20 by band 55.Like this, due to the two ends utilizing band 55 to fix intermediate cylinder portion 30, so the air-tightness of connecting portion can be guaranteed.Also band 55 can be replaced to use rope to be fixed.
In this example, on miniature gears side body 10, with the state adjacent with cylindrical protrusion 12, form the cylindrical protrusion 56 that the outstanding tooth bar guide portion of oriented vehicle body back side (downside of Fig. 9) is inserted.Not shown tooth bar guide portion is inserted into the cylindrical protrusion 56 that this tooth bar guide portion is inserted.This tooth bar guide portion guides the back side (face of the opposition side of tooth surface of rack) of rack shaft 40 by roller etc., and the distortion of the rack shaft 40 preventing counter-force when engaging with miniature gears from causing, rack shaft 40 slides swimmingly.
In this example, because intermediate cylinder portion 30 is by having flexible synthetic resin or rubber is formed, there is elasticity, and there is flexibility, so supporting turns to the ability of counter-force little from wheel, or can not support.Thus, when this example, by metal miniature gears side body 10 and miniature gears opposition side housing are installed on vehicle frame with rigid construction, are supported by these miniature gears side bodies 10 and miniature gears opposition side housing 20 thus and turn to counter-force from wheel.
In addition, the intermediate cylinder portion 30 due to this example uses the material with flexible non-metal of synthetic resin or rubber etc. to be formed, so light with the situation phase specific mass manufactured by metallic material, and has large elasticity, and has flexibility, can stretch.In addition, compared with using the situation of metallic material, quality can be made light, and fee of material can be suppressed lower.In addition, owing to not needing secondary processing, so the attenuating of tooling cost can also be realized.
When this example, be arranged on two mounting holes 131 on miniature gears side body 10 line each other or near it linking, be configured with pinion shaft 107.Thereby, it is possible to the counter-force of tooth bar when bearing low damage in a effective manner and gear.First case and the second case of other structures of the 3rd example of embodiment and function and embodiment are identical.
［ the 4th example of embodiment ］
Figure 10 is the birds-eye view of the key position of the deflector 103d of the steering hardware representing the 4th example forming embodiments of the present invention.This example is the variation of the 3rd example of embodiment, therefore omits or simplify the explanation of the routine part repeated with the 3rd, and marks identical Reference numeral to identical parts and be described.This example forms ripply example at the two ends in intermediate cylinder portion 30.
That is, in this example, at right-hand member and the left end in the intermediate cylinder portion 30 using the material with flexible non-metal of synthetic resin or rubber etc. to be formed by injection molded or blow molding, the ripple 57 that can stretch is formed with.
When this example, owing to being formed with the ripple 57 that can stretch at the two ends in intermediate cylinder portion 30, so can be stretched the manufacturing errors or assembly error etc. that absorb all parts by ripple 57, miniature gears side body 10 and miniature gears opposition side housing 20 operation be arranged on vehicle frame are become easy.In addition, because ripple 57 stretches, so do not need each mounting hole 131,211 to be made along the long elongated hole of the axis of rack shaft 40, mounting hole 131,211 can be formed with simple circular hole.
［ the 5th example of embodiment ］
Figure 11 is the birds-eye view of the key position of the deflector 103e of the steering hardware representing the 5th example forming embodiments of the present invention.This example is the variation of the 3rd example of embodiment, therefore omits or simplify the explanation of the routine part repeated with the 3rd, and marks identical Reference numeral to identical parts and be described.This example forms ripply example in the total length in intermediate cylinder portion 30.
That is, in this example, in the length range in the intermediate cylinder portion 30 using the material with flexible non-metal of synthetic resin or rubber etc. to be formed by injection molded or blow molding, the ripple 58 that can stretch is formed with.
When this example, owing to being formed with the ripple 58 that can stretch in the total length in intermediate cylinder portion 30, even so the different model of the length of rack shaft 40, also flexibly can stretch by making the total length in intermediate cylinder portion 30, universally using.
［ the 6th example of embodiment ］
Figure 12 is the birds-eye view of biopsy cavity marker devices of the key position of the deflector 103f of the steering hardware representing the 6th example forming embodiments of the present invention, and Figure 13 is the longitudinal section of the engaging piece representing miniature gears in Figure 12 and tooth bar.This example is the variation of the 3rd example of embodiment, omits or simplify the explanation of the routine part repeated with the 3rd, and marks identical Reference numeral to identical parts and be described.This example is the example of pinion type power steering hardware the present invention being applicable to miniature gears assistance type.
In the deflector 103f of this example, the upper direction of Figure 12 is equivalent on the upside of vehicle body, and lower direction is equivalent on the downside of vehicle body, and the left and right directions of Figure 12 is equivalent to vehicle body left and right directions, and the direction orthogonal with the paper of Figure 12 is equivalent to vehicle body fore-and-aft direction.
As shown in figure 13, the bottom of pinion shaft 02 can be supported by axle rotatably by ball-bearing casing 031.In addition, jam nut 032 screws up the external screw thread 021 on the outer peripheral face of the bottom being formed in this pinion shaft 02.This jam nut 032 will form the assigned position of inner ring supporting and fixing in the bottom of pinion shaft 02 of ball-bearing casing 031.
Form the outer ring of ball-bearing casing 031 to be pressed into being formed in miniature gears side body 10 and to be arranged at bearing hole 042 on the lower tooth roller box 041 of lower part.In addition, the outer ring forming ball-bearing casing 031 is pushed upward by the end cap 033 screwed up with the negative thread 043 on the inner peripheral surface being formed in open side end in bearing hole 042, and by supporting and fixing on lower tooth roller box 041.
In addition, the core bar 052 of the worm gear 051 engaged with the worm screw 053 forming worm decelerating machine 05 is pressed into the upper end of pinion shaft 02.This worm screw 053 with turn to auxiliary electro-motor 054(with reference to Figure 12) output shaft link.In addition, the lower side part of the part of the press-in worm gear 051 in pinion shaft 02 by ball-bearing casing 034 so that radial power can be supported and the mode that can rotate is supported on lower tooth roller box 041 by axle.
On the other hand, in the upper gear box 044 of upper surface being fixed on lower tooth roller box 041, through tween drive shaft 106 as shown in Figure 14, the input shaft 06 linked with bearing circle 101 can be supported by axle rotatably by ball-bearing casing 061.Upper end is linked to the torsion bar 063 of this input shaft 06 by pin 062, and its lower end, by lining 064 axle supporting periphery, than this lining 064 part more on the lower, is linked by the upper end of press-in with pinion shaft 02.
Torque sensor 07 for detecting the torque acting on the torsion bar 063 linked as described above is made up of sensor axis portion 071, a pair magnetic test coil 073,074 and cylinder part 075.Sensor axis portion 071 is wherein formed in the bottom of input shaft 06, and the multiple raised lines extended vertically are along the circumferential direction to be formed at equal intervals.In addition, magnetic test coil 073,074 is configured in the inner side in the yoke portion be pressed into inside upper gear box 044.And cylinder part 075 is configured between sensor axis portion 071 and magnetic test coil 073,074, and is fixed on the upper end of pinion shaft 02.In addition, on cylinder part 075, with magnetic test coil 073,074 relative position, be along the circumferential direction equally spaced formed with multiple rectangular window.
When by direction of operating dish 101, when input shaft 06 rotates, its rotational force transmits to pinion shaft 02 via torsion bar 063.Now, by the resistance of wheel flutter side, the torsion bar 063 of link input shaft 06 and pinion shaft 02 is twisted, occur between the window of the raised line on the surface being formed in sensor axis portion 071 and cylinder part 075 relatively to rotate.And, the magnetic flow increase and decrease occurred in sensor axis portion 071.
The change of the increase and decrease of the magnetic flow that there occurs in sensor axis portion 071 as inductance detects by magnetic test coil 073,074, and detects the torque acting on torsion bar 063.Thus, drive electro-motor 054, with the required auxiliary force that turns to, worm screw 053 is rotated.The rotation of this worm screw 053 is passed to worm gear 051, pinion shaft 02 and rack shaft 40, by the pull bar 104 linked with rack shaft 40, changes the direction of wheel flutter.
Roller 083 is pressed against the back side of rack shaft 40 by tooth bar guide portion 08 by adjustable cap 084.This roller 083 can be supported by axle rotatably by axle 081 and the needle bearing 082 be configured in around it.Roller 083 is pressed against the back side of rack shaft 40 by adjustable cap 084 by disk spring.Thus, there is not the backlash of the engaging piece of miniature gears 022 and rack shaft 40, rack shaft 40 can move swimmingly.
As shown in figure 12, on miniature gears side body 10 and miniature gears opposition side housing 20, be formed with vehicle body installation jut 13,21 highlightedly respectively along vehicle body fore-and-aft direction (above-below direction of Figure 12).In these vehicle body installations with on jut 13,21, often locate the circular mounting hole of formation one 131,211 respectively along vehicle body above-below direction (direction orthogonal with the paper of Figure 13).
Not shown bolt is inserted described each mounting hole 131,211, and by this bolted on vehicle frame, thus, miniature gears side body 10 and miniature gears opposition side housing 20 are installed on vehicle frame with rigid construction.
The intermediate cylinder portion 30 of this example also by having flexible synthetic resin or rubber is formed, having elasticity, having flexibility, thus supports and turn to the ability of counter-force little from wheel, maybe can not support.Thus, when this example, metal miniature gears side body 10 and miniature gears opposition side housing 20 are arranged on vehicle frame with rigid construction, are supported by these miniature gears side bodies 10 and miniature gears opposition side housing 20 and turn to counter-force from wheel.
In addition, the intermediate cylinder portion 30 of this example uses the material with flexible non-metal of synthetic resin or rubber etc. to be formed, thus compared with situation about being manufactured by metallic material, quality is light, and has large elasticity, has flexibility, can stretch.In addition, compared with using the situation of metallic material, quality is light, and can suppress fee of material lower.In addition, owing to not needing secondary processing, so alleviating of tooling cost can also be realized.
In the 3rd example ~ the 6th example of embodiment, be illustrated for the pinion type power steering hardware of the pinion type power steering hardware and miniature gears assistance type that the present invention are applicable to Steering gear assistance type, but the present invention also goes for the pinion-and-rack steering device of type hand.
In addition, the invention is not restricted to the structure of each example of above-mentioned embodiment, can various change be carried out, about appropriately combined different embodiment disclosed technological means and the embodiment that obtains respectively, be also contained in technical scope of the present invention.
The explanation of Reference numeral
101 bearing circle
102 motors
103,103a ~ f diverter unit
104 pull bars
105 posts
106 tween drive shafts
107 pinion shafts
108 cylinder portions
109 rack shafts
110 gear housing
111 main resettlement sections
112 secondary resettlement sections
10 miniature gears side bodies
11 negative threads
12 cylindrical protrusion
13 vehicle body installation juts
131 mounting holes
14 bearing surfaces
15 bearing surfaces
16 cylindrical portion
20 miniature gears opposition side housings
21 vehicle body installation juts
211 mounting holes
30 intermediate cylinder portions
31 external screw threads
32 O shape rings
33 flange parts
34 damper elements
35 inner peripheral surfaces
36 bearing linings
37 lining holding elements
40 rack shafts
41 solid axles
411 outer peripheral faces
412 endless grooves
413 inner peripheral surfaces
414 path solid part
42 quill shafts
421 inner peripheral surfaces
422 right sides
423 path hollow bulbs
424 large footpath hollow bulbs
4241 inner peripheral surfaces
4242 right sides
425 path hollow bulbs
426 outer peripheral faces
43 engaging protuberances
431 inner peripheral surfaces
432 recesses
433 damper elements
434 right sides
435 left sides
44 weld parts
51,52 sphero-joint sockets
53,54 sphero-joint protective cases
55 bands
56 cylindrical protrusion
57 ripples
58 ripples
59 cylindrical portion
60 cylindrical portion
02 pinion shaft
021 external screw thread
022 miniature gears
031 ball-bearing casing
032 jam nut
033 end cap
034 ball-bearing casing
041 lower tooth roller box
042 bearing hole
043 negative thread
044 upper gear box
05 worm gear box
051 worm gear
052 core bar
053 worm screw
054 electro-motor
06 input shaft
061 ball-bearing casing
062 pin
063 torsion bar
064 lining
07 torque sensor
071 sensor axis portion
072 yoke portion
073,074 magnetic test coil
075 cylinder part
08 tooth bar guide portion
081 axle
082 needle bearing
083 roller
084 adjustable cap
Claims (7)
1. a rack and pinion steering gear unit, is characterized in that, this rack and pinion steering gear unit possesses:
Based on the rotation of pinion shaft and the rack shaft moved back and forth;
Sphero-joint socket, diameter is formed in the two ends of this rack shaft than this rack shaft the earth;
Metal miniature gears side body, can support the miniature gears side end being configured with described pinion shaft in described rack shaft slidably, and can be fixed on vehicle frame;
Metal miniature gears opposition side housing, it can support the end, miniature gears opposition side of opposition side in described rack shaft, that be in described miniature gears side end slidably, and can be fixed on vehicle frame;
The intermediate cylinder portion of hollow cylindrical, its one end is connected with described miniature gears side body, the other end is connected with described miniature gears opposition side housing, and covers the axial pars intermedia be between described miniature gears side end and end, described miniature gears opposition side of described rack shaft;
Engaging protuberance, diameter is formed in the described axial pars intermedia of described rack shaft than this rack shaft the earth,
During described rack shaft displacement, the sphero-joint socket be installed on described miniature gears side end in described sphero-joint socket abuts with one end of described miniature gears side body, limit the movement of this rack shaft to miniature gears opposition side thus, described engaging protuberance abuts with the other end of described miniature gears side body, limit the movement of this rack shaft to miniature gears side thus, and
Described miniature gears side body is formed with vehicle body installation jut in the mode outstanding to vehicle body fore-and-aft direction, this vehicle body installation jut is formed with mounting hole respectively, is being configured with described pinion shaft by line connected to each other for these mounting holes.
2. rack and pinion steering gear unit as claimed in claim 1, it is characterized in that, described miniature gears opposition side housing can support the end, miniature gears opposition side of described rack shaft slidably via elastomeric element.
3. rack and pinion steering gear unit as claimed in claim 1, it is characterized in that, described rack shaft engages the solid axle being formed with tooth bar and the quill shaft not forming tooth bar is formed, around the junction surface of this solid axle and this quill shaft, be formed with described engaging protuberance.
4. rack and pinion steering gear unit as claimed in claim 1, it is characterized in that, the damper element of elastomeric element is installed on the bearing surface abutted with the other end of described miniature gears side body in described engaging protuberance.
5. rack and pinion steering gear unit as claimed in claim 1, it is characterized in that, described intermediate cylinder portion can along the axial stretching of described rack shaft.
6. rack and pinion steering gear unit as claimed in claim 1, it is characterized in that, the material in described intermediate cylinder portion is synthetic resin.
7. rack and pinion steering gear unit as claimed in claim 1, it is characterized in that, the material in described intermediate cylinder portion is rubber.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-096717 | 2011-04-25 | ||
| JP2011096717A JP5527275B2 (en) | 2011-04-25 | 2011-04-25 | Steering device |
| JP2011-113242 | 2011-05-20 | ||
| JP2011113242A JP5445511B2 (en) | 2011-05-20 | 2011-05-20 | Steering device |
| PCT/JP2012/060934 WO2012147724A1 (en) | 2011-04-25 | 2012-04-24 | Rack-and-pinion steering gear unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102858617A CN102858617A (en) | 2013-01-02 |
| CN102858617B true CN102858617B (en) | 2015-04-15 |
Family
ID=47072242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280000380.8A Active CN102858617B (en) | 2011-04-25 | 2012-04-24 | Rack-and-pinion steering gear unit |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US9199662B2 (en) |
| EP (1) | EP2703252B1 (en) |
| CN (1) | CN102858617B (en) |
| WO (1) | WO2012147724A1 (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5957309B2 (en) * | 2012-06-21 | 2016-07-27 | 高周波熱錬株式会社 | Rack bar and rack bar forming teeth |
| JP6530882B2 (en) * | 2012-12-27 | 2019-06-12 | 高周波熱錬株式会社 | Rack manufacturing apparatus and rack manufacturing method |
| JP6343431B2 (en) * | 2013-06-03 | 2018-06-13 | 高周波熱錬株式会社 | Rack manufacturing method and hollow rack bar |
| FR3011799B1 (en) * | 2013-10-10 | 2015-12-11 | Jtekt Europe Sas | MODULAR CRADLE FOR A VEHICLE RAILWAY COMPRISING A TRANSVERSE BEARING RECEIVING AN ALTERNATED FRACTION STEERING HOUSING |
| CN103682802B (en) * | 2013-11-30 | 2016-01-20 | 成都国科海博信息技术股份有限公司 | The many bayonet mounts of antidetonation |
| JP6095633B2 (en) * | 2014-11-21 | 2017-03-15 | Thk株式会社 | Rotational linear motion conversion device, steering device |
| US9586612B2 (en) * | 2015-04-22 | 2017-03-07 | Honda Motor Co., Ltd. | Steering gear box, front body for vehicle frame and method |
| US10562138B2 (en) * | 2015-11-04 | 2020-02-18 | Neturen Co., Ltd. | Method for manufacturing rack bar |
| DE102016013272A1 (en) | 2016-11-09 | 2018-05-09 | Thyssenkrupp Ag | Method for simplified mounting of a rack and pinion steering gear of a rack and pinion steering |
| DE102016013269A1 (en) | 2016-11-09 | 2018-05-09 | Thyssenkrupp Ag | Rack and pinion steering for a motor vehicle with worm gear |
| JP2019031211A (en) * | 2017-08-09 | 2019-02-28 | 日立オートモティブシステムズ株式会社 | Steering device |
| JP6889659B2 (en) * | 2017-12-28 | 2021-06-18 | Ｋｙｂ株式会社 | Steering device |
| CN108773410B (en) * | 2018-05-31 | 2020-12-25 | 上海理工大学 | Steering gear rack |
| CN114954630A (en) * | 2021-02-24 | 2022-08-30 | 本田技研工业株式会社 | Front structure of vehicle |
| CN115158441A (en) * | 2022-07-19 | 2022-10-11 | 江西五十铃汽车有限公司 | Novel rack and pinion steering gear |
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| CN101247982A (en) * | 2005-05-20 | 2008-08-20 | Trw汽车股份有限公司 | Steering gear |
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| US4421191A (en) * | 1980-09-30 | 1983-12-20 | Valeo Societe Anonyme | Power assisted steering device for a vehicle |
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2012
- 2012-04-24 CN CN201280000380.8A patent/CN102858617B/en active Active
- 2012-04-24 EP EP12734776.3A patent/EP2703252B1/en active Active
- 2012-04-24 US US13/574,459 patent/US9199662B2/en not_active Expired - Fee Related
- 2012-04-24 WO PCT/JP2012/060934 patent/WO2012147724A1/en active Application Filing
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| US4522419A (en) * | 1982-03-31 | 1985-06-11 | Nissan Motor Company, Limited | Rack and pinion type steering device |
| CN101247982A (en) * | 2005-05-20 | 2008-08-20 | Trw汽车股份有限公司 | Steering gear |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102858617A (en) | 2013-01-02 |
| EP2703252A4 (en) | 2015-07-29 |
| US9199662B2 (en) | 2015-12-01 |
| WO2012147724A1 (en) | 2012-11-01 |
| US20130074621A1 (en) | 2013-03-28 |
| EP2703252A1 (en) | 2014-03-05 |
| EP2703252B1 (en) | 2017-08-16 |
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